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![]() When spider encounters Item_aggregate_ref that is valid at gbh creation, it could become invalid at gbh execution due to item list substitution*. Therefore we ban Item_aggregate_ref for spider gbh creation. To that end, we also make sure that str is NULL if and only if in the creation stage, not the execution stage, including removing a redundant check when str is not NULL. *: Note that it is likely the same scenario as in MDEV-25116. |
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